Most salmonella cases are not reported, so some experts believe that the true figure for this outbreak is much closer to 16,000 sick. That number comes from using a salmonella multiplier of 30.3, which has been derived from studying other such outbreaks.

What began as an effort to skirt U.S. emissions standards has exploded into a global crisis for Volkswagen. Initial reports indicated VW rigged 500,000 vehicles to emit lower harmful chemicals during testing, and now the auto manufacturer has admitted that the emissions scandal could affect 11 million vehicles worldwide.

So what exactly happened? And could your Jetta wagon or Rabbit convertible be recalled?